NPPES file of Aug 9, 2026

John Benjamin Synhorst, D.D.S

Oral and Maxillofacial Surgery (Dentist) · Spencer, IA

John Benjamin Synhorst, D.D.S is an oral and maxillofacial surgery (dentist) with a practice address in Spencer, Iowa, and NPI 1598760605, issued on Jun 15, 2005. Check the license (Iowa 05999, as entered in NPPES) with the Iowa board that licenses this profession; the federal record below is the public data PlainDoctor holds for this provider.

Record from CMS NPPES, file of Aug 9, 2026 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1598760605
Name
John Benjamin Synhorst
Credential
D.D.S
Primary taxonomy
Oral and Maxillofacial Surgery (Dentist) 1223S0112X
License numbers
05999 IA
D9749 MN
Self-reported in NPPES; status is on the state search
Practice location
116 E 11TH St, Spencer, IA 51301
Phone
(712) 262-7350
Enumerated
Jun 15, 2005
Record last updated
Nov 24, 2009 (not updated in 17 years: call before relying on the address or phone)
Fax
(712) 262-7351
Medicaid IDs
080020100 MN
0138928 IA
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). A record is not a license: verify it with the state board.
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8 nearest oral and maxillofacial surgery (dentist) records → All 94 in Iowa → Look up another NPI →

Also registered at 116 E 11TH St

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Sara Casey, ARNPNurse Practitioner1003401720
  2. James Coenen, PHARMACISTPharmacist1851409841
  3. Ronald Creswell, M.D.Family Medicine Physician1255311833
  4. Brian Dvorak, M.D.Family Medicine Physician1942280193
  5. Bruce Feldmann, M.D.Family Medicine Physician1801876685
  6. Ann Fitzgibbons, RPHPharmacist1811099872

Verify John Benjamin Synhorst in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich Iowa board licenses this profession
    Search for license 05999    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Find the Iowa license search

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John Benjamin Synhorst among 94 oral and maxillofacial surgery (dentist) records in Iowa

John Benjamin Synhorst, D.D.S is one of 94 oral and maxillofacial surgery (dentist) records with a practice address in Iowa. 70% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does not. Its NPI, issued in 2005, is newer than 0% of them.

  • NPI issued2005 · 0% of these records are older, 79% newer
  • In a Medicare fileNo · 70% of these records are
  • In the CMS Doctors and Clinicians fileNo · 11% of these records are
  • Record last updated2009 · 60% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 1223S0112X and a Iowa practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Oral and Maxillofacial Surgery (Dentist) providers in Iowa

There are 94 oral and maxillofacial surgery (dentist) records in Iowa. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.

All 94 in Iowa → Every provider in Spencer → Oral and Maxillofacial Surgery (Dentist) nationwide →

The 8 oral and maxillofacial surgery (dentist) records with the nearest ZIP codes

  1. Adam Holton, DDSSpencer, IA 513011225419591
  2. Gentry Hansen, DMD, MDSioux City, IA 511061235497975
  3. Darrel Baker, DDSSioux City, IA 511041467411033
  4. Richard Dohrmann, DDS MSSioux City, IA 511041740257740
  5. Federico Castillo, D.D.S.Council Bluffs, IA 515011437531209
  6. James Barton, MD, DDSCouncil Bluffs, IA 515031215038740
  7. David Marshall, DMDCouncil Bluffs, IA 515031144324302
  8. Edward Schaefer, D.M.D.Council Bluffs, IA 515031467846519

Common questions

What is John Benjamin Synhorst, D.D.S's NPI number?

John Benjamin Synhorst, D.D.S's National Provider Identifier (NPI) is 1598760605, issued on Jun 15, 2005. An NPI identifies a provider in billing; it is not a license.

Where is John Benjamin Synhorst, D.D.S located?

The NPPES record lists a practice address at 116 E 11TH St, Spencer, IA, 51301. Phone: (712) 262-7350. Providers update this record themselves, so call before visiting.

How can I verify John Benjamin Synhorst, D.D.S's license?

NPPES lists Iowa license number 05999, as entered by the provider. Search the Iowa board that licenses this profession; the NPPES record confirms identity only.

Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. An NPI identifies who bills; it is not a license.

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.